For titles that are in a different packaging, you can put (jewel case) on jewel case releases and leave DVD case without a descriptor. Using "edition" in descriptor should be removed, as it is not a proper edition and this text is not on the packaging.
Muumit piilosilla (Jewel Case)
https://vgcollect.com/item/123859vs
Muumit piilosilla (Win 3.1 edition)
https://vgcollect.com/item/127373This won't work because 127373 is jewel case also. AND the "Win 3.1" isn't correct, as you can see from the picture. Try to use some term actually on the cover. From the two I linked above, you can see a difference such as "PC & Mac" vs "PC / Mac" or "WSOY" vs "CD WSOY" etc
Having the publishers in the title as a descriptor is fine.